Fitness machine



FIG. 1 is a front view of a fitness machine showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front right upper perspective view thereof; and,

FIG. 8 is a front right lower perspective view thereof.

The broken lines depict portions of the fitness machine in which the design is embodied that are not considered part of the claimed design. 

CLAIM The ornamental design for a fitness machine, as shown and described. 